| Author |
Message |
Bob Baldwin (Bob4106) (69.132.84.145)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 8:56 am: | |
I know where to put the white and black wire but where do you put the green for a 30 amp ( same place as the white) |
Bill Gerrie (209.50.74.84)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 9:08 am: | |
Bob
You put the green on the frame of the gen set. There usually is a bolt near the 120 volt connections to fasten it to. It is a common practice to have the white on the frame as well. If you connect your coach to a campground that is equipped with a GFCI you will always trip it unless you can isolate the white wire from the frame if that is where yours is. It depends if you are using a simple plug in the gen set to the coach (cheapest and simplist way) when it is needed or a costly but convenient automatic switchover device. Hope this helps. Bill |
BrianMCI96A3 (208.13.135.189)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 9:12 am: | |
YIKES, to be honest I'm no electrician, and am just learning, but in house AC wiring the green wire is to ground.
In a bus the green should go to the coach chassis.
Least-wise, that's what I've been told.
Brian |
Bill Gerrie (209.50.74.84)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 9:25 am: | |
Brian
The frame of the gen set is ground. There is always a heavy ground strap from the gen set to the bus chassis for starting purposes which serves to bond the gen set to the bus frame. Bill |
Sam Sperbeck (204.248.119.254)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 10:35 am: | |
Hi Bill,
You say, "There is always a heavy ground strap from the gen set to the bus chassis....". I say, not nessessarily! Some gen sets are hooked up directly to the battery and not through the chassis except where the gen set is bolted to the chassis. The gen sets that are trailer mounted and used on construction sites are often that way, however, the neutral/ground bond still exists internally, independant of the starting electrical system, in the gen set, and where possible the frame is grounded through a ground rod driven into the ground.
Thanks, Sam Sperbeck
La Crescent, MN |
Sean Welsh (Sean) (64.81.73.194)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 1:24 pm: | |
Sam, Bill, Brian:
Whatever you do with regard to neutral/ground bonding, the green wire still goes to the generator frame, and, per NEC, there must be an additional grounding mechanism between the generator frame and the coach chassis. If your generator frame is not mounted to the chassis in a way that meets this requirement, you must add a grounding strap for this purpose. The battery negative cable is not an acceptable grounding means.
Bob:
If you really don't know where to put the green wire, I strongly suggest you enlist professional help in wiring your generator. This is a device that produces deadly current at deadly voltage -- don't take chances. You need to be dead certain you have it right. At a bare minimum, you need to get a copy of the National Electric Code Handbook and read the entire section on RV wiring.
All:
If the generator is a "separately derived system" as defined in the code (and most vehicle-mounted generators are), then ground and neutral MUST be tied together at the generator. This is done with an additional strap -- the green wire still goes to the frame. (Most generators come with this atrap already in place.) If you think your generator is not a "separately derived system," you had best REALLY know what you are doing... your system must be designed such that the gound and neutral can never, ever be unbonded.
-Sean |
CoryDane RTSII (66.155.188.28)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 5:27 pm: | |
HO HO here we go
"your system must be designed such that the gound and neutral can never, ever be unbonded."
That is of course UNLESS you are on shore power, did'nt we just go through that?
"Imagine"
cd |
Sean Welsh (Sean) (64.81.73.194)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 14, 2004 - 7:37 pm: | |
Cory,
When on shore power, the system IS bonded -- the bond is in the shore system.
-Sean |
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